import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue';
Vue.use(VueRouter)

const routes = [
  
  {
    path: '/',
    name: 'login', 
    redirect:'/login'

  },
  {
    path: '/login',
    component:Login
  },
  {
    path: '/home',
    component: Home,
    redirect:'/welcome',
    children: [{ path: '/welcome', component: Welcome },
      { path: "/users", component: Users },
      { path: "/rights", component: Rights },
    {path:"/roles",component:Roles}]
  }
  
]

const router = new VueRouter({
  routes
})
// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // from代表从哪个路径跳转而来
  // next是一个函数,表示放行
  // next() 放行 next('/login')强制跳转到
  if (to.path === '/login') return next();
  // 获取token值
  const token = window.sessionStorage.getItem('token');
  if (token!=null) return next();
  next('login');
})

export default router
